Sonoran desert snake communities at two sites: Concordance and effects of increased road traffic
Sonoran desert snake communities at two sites: Concordance and effects of increased road traffic
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两个地点的索诺兰沙漠蛇群落：道路交通增加的一致性和影响
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
B. Sullivan
中科院分区：
文献类型：
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作者：
T. R. Jones;Randall D. Babb;F. Hensley;Christine LiWanPo;B. Sullivan
我们调查了亚利桑那州中南部索诺兰沙漠两个地点的蛇群落。从1982年至2009年，我们使用道路作为采样样带，并记录了在夜间检测到的所有蛇在凤凰城南部的主要下科罗拉多河谷细分社区和主要亚利桑那州高地细分社区凤凰城西部。在这些索诺兰沙漠遗址中，蛇群落在物种多样性和丰富度方面基本一致：四种（Crotalus cerastes，C. atrox，C. Scutulatus和Rhinocheilus lecontei）占两个地点所有个体的67-70%。最常见的物种表现出相似的分布在这两个网站的栖息地毗邻的道路。在过去十年中，两个地点的交通量急剧上升，其中一个地点的所有蛇的丰度下降，另一个地点的死蛇比例显着增加。在美国西南部的蛇群落与其他道路骑调查的比较表明，这种技术提供了一致的和可重复的结果，这种方法表明，类似的物种在亚利桑那州的索诺兰沙漠的蛇群落数量占主导地位。
—We surveyed the snake communities at two locations in the Sonoran Desert of southcentral Arizona. From 1982–2009, we used roadways as sampling transects and recorded all snakes detected during nights at a predominately Lower Colorado River Valley subdivision community south of Phoenix and at a primarily Arizona Upland subdivision community west of Phoenix. The snake communities were largely concordant both in diversity and abundance of species at these Sonoran Desert sites: four species (Crotalus cerastes, C. atrox, C. scutulatus, and Rhinocheilus lecontei) accounted for 67–70% of all individuals at the two sites. The most common species exhibited similar distributions at both of the sites with respect to habitat adjacent to the roadway. Following a dramatic upsurge in traffic volume at both sites in the past decade, the abundance of all snakes declined at one site, and the proportion of dead snakes increased significantly at the other site. Comparison with other road-riding surveys of snake communities in the American Southwest indicates that this technique provides consistent and repeatable results, and that this method suggests similar species numerically dominate snake communities in the Sonoran Desert of Arizona.